[Object] To measure a form of light scattering in a body more simply.[Solution] A measurement device according to the present disclosure includes: a light source configured to emit at least one kind of measurement light belonging to a predetermined wavelength band toward a measurement region formed by at least a part of a living body； a detection unit configured such that a plurality of sensors are arranged regularly in a predetermined disposition and the measurement light emitted from the light source and transmitted through the living body is detected by the plurality of sensors； and an analysis unit configured to analyze at least one of rectilinearity of the measurement light in the living body and an optical distance from the light source using a detection result of the measurement light detected by the detection unit.
